End-to-end Speech-to-Punctuated-Text Recognition

• URL: http://arxiv.org/abs/2207.03169v1
• Date: Thu, 7 Jul 2022 08:58:01 GMT
• Title: End-to-end Speech-to-Punctuated-Text Recognition
• Authors: Jumon Nozaki, Tatsuya Kawahara, Kenkichi Ishizuka, Taiichi Hashimoto
• Abstract summary: punctuation marks are important for the readability of the speech recognition results. Conventional automatic speech recognition systems do not produce punctuation marks. We propose an end-to-end model that takes speech as input and outputs punctuated texts.
• Score: 23.44236710364419
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Conventional automatic speech recognition systems do not produce punctuation marks which are important for the readability of the speech recognition results. They are also needed for subsequent natural language processing tasks such as machine translation. There have been a lot of works on punctuation prediction models that insert punctuation marks into speech recognition results as post-processing. However, these studies do not utilize acoustic information for punctuation prediction and are directly affected by speech recognition errors. In this study, we propose an end-to-end model that takes speech as input and outputs punctuated texts. This model is expected to predict punctuation robustly against speech recognition errors while using acoustic information. We also propose to incorporate an auxiliary loss to train the model using the output of the intermediate layer and unpunctuated texts. Through experiments, we compare the performance of the proposed model to that of a cascaded system. The proposed model achieves higher punctuation prediction accuracy than the cascaded system without sacrificing the speech recognition error rate. It is also demonstrated that the multi-task learning using the intermediate output against the unpunctuated text is effective. Moreover, the proposed model has only about 1/7th of the parameters compared to the cascaded system.

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